CN106358041B - A kind of interframe prediction encoding method and device - Google Patents
A kind of interframe prediction encoding method and device Download PDFInfo
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- CN106358041B CN106358041B CN201610765403.4A CN201610765403A CN106358041B CN 106358041 B CN106358041 B CN 106358041B CN 201610765403 A CN201610765403 A CN 201610765403A CN 106358041 B CN106358041 B CN 106358041B
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- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
- H04N19/503—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction
- H04N19/51—Motion estimation or motion compensation
- H04N19/513—Processing of motion vectors
- H04N19/517—Processing of motion vectors by encoding
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- H—ELECTRICITY
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- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
- H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
- H04N19/17—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object
- H04N19/176—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a block, e.g. a macroblock
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
- H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
- H04N19/103—Selection of coding mode or of prediction mode
- H04N19/105—Selection of the reference unit for prediction within a chosen coding or prediction mode, e.g. adaptive choice of position and number of pixels used for prediction
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
- H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
- H04N19/119—Adaptive subdivision aspects, e.g. subdivision of a picture into rectangular or non-rectangular coding blocks
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- H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
- H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
- H04N19/136—Incoming video signal characteristics or properties
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- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
- H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
- H04N19/136—Incoming video signal characteristics or properties
- H04N19/137—Motion inside a coding unit, e.g. average field, frame or block difference
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- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
- H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
- H04N19/157—Assigned coding mode, i.e. the coding mode being predefined or preselected to be further used for selection of another element or parameter
- H04N19/159—Prediction type, e.g. intra-frame, inter-frame or bidirectional frame prediction
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- H—ELECTRICITY
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- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/46—Embedding additional information in the video signal during the compression process
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
- H04N19/503—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
- H04N19/503—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction
- H04N19/51—Motion estimation or motion compensation
- H04N19/577—Motion compensation with bidirectional frame interpolation, i.e. using B-pictures
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Abstract
The embodiment of the invention discloses a kind of interframe prediction encoding method and devices, which comprises frame to be encoded is divided into multiple blocks to be encoded using encoder；For each block to be encoded, the corresponding forward coding block of the block to be encoded and backward encoding block are determined；Determine corresponding first weighting parameters of forward coding block；Determine comprising forward coding block reference picture the second weighting parameters based on overall brightness, and determination include after to encoding block reference picture the third weighting parameters based on overall brightness；According to the first weighting parameters, to corresponding 4th weighting parameters of encoding block after determining；According to the first weighting parameters, the second weighting parameters, third weighting parameters, the 4th weighting parameters, the practical weighting parameters of the prediction of the block to be encoded are determined；Using the practical weighting parameters of prediction, predictive coding is carried out to the block to be encoded.Using interframe prediction encoding method provided in an embodiment of the present invention and device, the accuracy of inter prediction encoding is improved.
Description
Technical field
The present invention relates to technical field of video coding, in particular to a kind of interframe prediction encoding method and device.
Background technique
It is well known that there is very strong correlation between video image data, that is to say, that there is a large amount of redundancy.Frame
Between predictive coding be exactly to be obtained using the block in the coded reference picture of time domain to predicting for current block to be encoded
Then predicted value encodes the difference of the value of block to be encoded and predicted value.Inter prediction encoding generally includes, forward prediction,
Back forecast, symmetrical prediction and bi-directional predicted.One forward or backward reference is only needed for forward prediction, back forecast
Frame, and symmetrically predict to need forward reference frame and backward reference frame with bi-directional predicted.
In general, bidirectional weighting can consider in the video coding framework of modern block base motion compensation mixing dct transform
Be weighting parameters be (1/2,1/2), then the weighting parameters of forward direction are (1,0), back-weight parameter is (0,1).H.264 double
Into coding, using being encoded separately, for the block to be encoded of frame to be encoded, it is assumed that coding parameter is 3, respectively
1/2,1/3,1/4, the forward reference frame of block to be encoded and backward reference frame respectively correspond 3 weighting parameters, forward reference frame and
The weighting parameters of backward reference frame will be selected from 9 (3*3) kind modes, and there may be forward direction weightings during actual prediction
The case where parameter and back-weight parameter are 1/3, it is clear that such weighting parameters be it is unreasonable, will cause inter-prediction volume
The accuracy of code is lower.
Summary of the invention
The embodiment of the present invention is designed to provide a kind of bidirectional weighting predictive coding method and device, pre- to improve interframe
Survey the accuracy of coding.
In order to achieve the above objectives, the embodiment of the invention discloses a kind of interframe prediction encoding methods, which comprises
Frame to be encoded is divided into multiple blocks to be encoded using encoder；
For each block to be encoded, the corresponding forward coding block of the block to be encoded and backward encoding block are determined；
Determine corresponding first weighting parameters of the forward coding block；
It determines the second weighting parameters based on overall brightness of the reference picture comprising the forward coding block, and determines
The third weighting parameters based on overall brightness of reference picture comprising the backward encoding block；
According to first weighting parameters, corresponding 4th weighting parameters of the backward encoding block are determined；
According to first weighting parameters, second weighting parameters, the third weighting parameters, the 4th weighting ginseng
Number, determines the practical weighting parameters of the prediction of the block to be encoded；
Using the practical weighting parameters of prediction, predictive coding is carried out to the block to be encoded.
Preferably, described to be directed to each block to be encoded, determine the corresponding forward coding block of the block to be encoded and backward coding
Block, comprising:
For each block to be encoded, using motion search technology, determine the corresponding forward coding block of the block to be encoded with after
To encoding block.
Preferably, corresponding first weighting parameters of the determination forward coding block, comprising:
According to the forward coding block and the backward encoding block, it is corresponding to calculate pre-set each forward direction weighting parameters
Prediction block；
Calculate the residual values of the block to be encoded and each prediction block；
By the corresponding forward direction weighting parameters of the smallest residual values of absolute value, it is determined as the first weighting parameters.
Preferably, the weighting parameters based on overall brightness of reference picture are determined, comprising:
According to the brightness value of all pixels of reference picture point and pixel sum, the reference picture is determined
Weighting parameters based on overall brightness.
Preferably, the weighting parameters based on overall brightness of reference picture are determined, comprising:
According to frame, the reference picture and the least residual technology to be encoded, determine the reference picture based on
The weighting parameters of overall brightness.
It is preferably, described to determine corresponding 4th weighting parameters of the backward encoding block according to first weighting parameters,
Include:
According to first weighting parameters and formula: the first weighting parameters of four weighting parameters=1-, determine it is described after
To corresponding 4th weighting parameters of encoding block.
In order to achieve the above objectives, the embodiment of the invention discloses a kind of inter prediction encoding device, described device includes:
Division module, for frame to be encoded to be divided into multiple blocks to be encoded using encoder；
First determining module determines the corresponding forward coding block of the block to be encoded with after for being directed to each block to be encoded
To encoding block；
Second determining module, for determining corresponding first weighting parameters of the forward coding block；
Third determining module, for determining second based on overall brightness of the reference picture comprising the forward coding block
Weighting parameters, and determine the third weighting parameters based on overall brightness of the reference picture comprising the backward encoding block；
4th determining module, for determining that the backward encoding block the corresponding 4th adds according to first weighting parameters
Weight parameter；
5th determining module, for according to first weighting parameters, second weighting parameters, third weighting ginseng
Several, described 4th weighting parameters, determine the practical weighting parameters of the prediction of the block to be encoded；
Coding module, for carrying out predictive coding to the block to be encoded using the practical weighting parameters of prediction.
Preferably, first determining module, is specifically used for:
For each block to be encoded, using motion search technology, determine the corresponding forward coding block of the block to be encoded with after
To encoding block.
Preferably, second determining module includes: the first computational submodule, the second computational submodule, determines submodule,
First computational submodule, for according to the forward coding block and the backward encoding block, calculating to be set in advance
The corresponding prediction block of each forward direction weighting parameters set；
Second computational submodule, for calculating the residual values of the block to be encoded and each prediction block；
The determining submodule, for being determined as first for the corresponding forward direction weighting parameters of the smallest residual values of absolute value
Weighting parameters.
Preferably, the weighting parameters based on overall brightness of reference picture are determined, comprising:
According to the brightness value of all pixels of reference picture point and pixel sum, the reference picture is determined
Weighting parameters based on overall brightness.
Preferably, the weighting parameters based on overall brightness of reference picture are determined, comprising:
According to frame, the reference picture and the least residual technology to be encoded, determine the reference picture based on
The weighting parameters of overall brightness.
Preferably, the 4th determining module, is specifically used for:
According to first weighting parameters and formula: the first weighting parameters of four weighting parameters=1-, determine it is described after
To corresponding 4th weighting parameters of encoding block.
As seen from the above technical solutions, a kind of interframe prediction encoding method and device provided in an embodiment of the present invention, institute
The method of stating includes: that frame to be encoded is divided into multiple blocks to be encoded using encoder；For each block to be encoded, determining should be wait compile
The corresponding forward coding block of code block and backward encoding block；Determine corresponding first weighting parameters of the forward coding block；Determine packet
The second weighting parameters based on overall brightness of reference picture containing the forward coding block, and determine to include the backward volume
The third weighting parameters based on overall brightness of the reference picture of code block；According to first weighting parameters, determine described backward
Corresponding 4th weighting parameters of encoding block；According to first weighting parameters, second weighting parameters, third weighting ginseng
Several, described 4th weighting parameters, determine the practical weighting parameters of the prediction of the block to be encoded；Using the prediction, actually weighting is joined
Number carries out predictive coding to the block to be encoded.
Using technical solution provided in an embodiment of the present invention, to volume after being determined by the forward direction weighting parameters of forward coding block
The corresponding back-weight parameter of code block, and do not have to choose back-weight parameter from weighting parameters, it avoids the prior art and is adding
The lower problem of the unreasonable accuracy that will lead to predictive coding of back-weight parameter is chosen in weight parameter.This improves
The accuracy of inter prediction encoding.
Certainly, implementing either present invention method or device must be not necessarily required to reach all the above excellent simultaneously
Point.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is a kind of flow diagram of interframe prediction encoding method provided in an embodiment of the present invention；
Fig. 2 is a kind of structural schematic diagram of inter prediction encoding device provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
To solve prior art problem, the embodiment of the invention provides a kind of interframe prediction encoding method and devices, below
It is described in detail respectively.
It should be noted that image uniform to be encoded is divided into mutual nonoverlapping basic coding unit by encoder, most
Greatly 64*64, to each basic coding unit according to sequential encoding from top to bottom, from left to right.In practical operation, it can incite somebody to action
Basic coding unit is encoded directly as a coding unit, can also be according to quad-tree partition by basic coding unit
Coding unit, coding unit can be again divided into encoding block.
Interframe prediction encoding method and device provided in an embodiment of the present invention, primarily directed to symmetrical prediction and bi-directional predicted
Two kinds of prediction modes, current frame to be encoded include forward reference frame list and backward reference frame lists, and reference frame lists are wrapped again
Containing multiple reference frames.For each block to be encoded, forward coding block and backward encoding block are searched for, is joined according to preset weighting
Number, choose optimal weighting parameters and encoded, when reference picture have brightness change when, it is also necessary to according to brightness change value into
Row weight estimation.
Fig. 1 is a kind of flow diagram of interframe prediction encoding method provided in an embodiment of the present invention, is included the following steps:
Frame to be encoded is divided into multiple blocks to be encoded using encoder by S101.
S102 determines the corresponding forward coding block of the block to be encoded and backward encoding block for each block to be encoded.
Specifically, being directed to each block to be encoded, the corresponding forward coding block of the block to be encoded and backward encoding block are determined, it can
To be directed to each block to be encoded, using motion search technology, the corresponding forward coding block of the block to be encoded and backward coding are determined
Block.
S103 determines corresponding first weighting parameters of the forward coding block.
Specifically, determine corresponding first weighting parameters of the forward coding block, can according to the forward coding block and
The backward encoding block calculates the corresponding prediction block of pre-set each forward direction weighting parameters；Calculate the block to be encoded and
The residual values of each prediction block；By the corresponding forward direction weighting parameters of the smallest residual values of absolute value, it is determined as the first weighting parameters.
S104 determines the second weighting parameters based on overall brightness of the reference picture comprising the forward coding block, with
And determine the third weighting parameters based on overall brightness of the reference picture comprising the backward encoding block.
Specifically, determine the weighting parameters based on overall brightness of reference picture, it can be according to the institute of the reference picture
There are the brightness value and pixel sum of pixel, determines the weighting parameters based on overall brightness of the reference picture.
It, can be according to the frame to be encoded, described specifically, determine the weighting parameters based on overall brightness of reference picture
Reference picture and least residual technology determine the weighting parameters based on overall brightness of the reference picture.
S105 determines corresponding 4th weighting parameters of the backward encoding block according to first weighting parameters.
Specifically, to corresponding 4th weighting parameters of encoding block after determining, can according to first weighting parameters and
Formula: the first weighting parameters of four weighting parameters=1- determine corresponding 4th weighting parameters of the backward encoding block.
S106, according to first weighting parameters, second weighting parameters, the third weighting parameters, the described 4th
Weighting parameters determine the practical weighting parameters of the prediction of the block to be encoded.
S107 carries out predictive coding to the block to be encoded using the practical weighting parameters of prediction.
It will be appreciated by persons skilled in the art that frame to be encoded is first divided into basic coding unit, basic coding list
Member can be four coding units by quad-tree partition, and four coding units can also carry out independent division, available big
Small is the encoding block of 8*8,8*16,16*8 or 16*16, for each basic coding unit take under, from left to right
Coded sequence carry out.As long as encoding block is able to satisfy coding requirement in the embodiment of the present invention, the size of encoding block is not added
To limit.
In actual use, each block to be encoded will search for phase therewith from forward direction reference frame lists and backward reference frame lists
Matched piece, i.e. forward coding block and backward encoding block.In general, determining forward coding block and backward volume using motion search technology
Code block.Motion search technology is the prior art, and the embodiment of the present invention does not repeat it herein.
Illustratively, the forward direction weighting parameters of encoder in advance setting are as follows: 1/3,2/3,1/4,1/2,3/4, block to be encoded
L0Forward coding block and backward encoding block be L1、L2, with the corresponding prediction block P of forward direction weighting parameters 1/31For, P1=1/3*
L1+(1-1/3)*L2, successively calculate P2、P3、P4、P5.By the value of obtain 5 prediction blocks and block to be encoded L0Subtract each other, it is assumed that
To residual values be respectively P1=0.15, P2=0.12, P3=0.11, P4=0.03, P5=-0.005, the smallest absolute value is P5
Corresponding -0.005, then it is determined as the first weighting parameters for 3/4.
When forward coding block to the reference picture where encoding block there is light intensity to change with after, needing will be with reference to figure
The brightness value of picture is also encoded.It is therefore desirable to calculate the weighting parameters of the overall brightness in relation to reference picture.Actual use
In, all brightness values of image can be added up to the summation for obtaining brightness value, then with the summation of brightness value divided by all pictures
Prime number obtains luminance weighted parameter.Illustratively, the pixel number of reference picture be 10,10 pixels brightness value it
Be 11, then luminance weighted parameter be 11/10, i.e., 1.1.Alternatively, frame to be encoded and two width reference pictures are first carried out it is down-sampled,
Become lesser image, select a luminance weighted parameter, it is multiplied to obtain weighted reference picture with reference picture, and will figure
As piecemeal, then to each of present image piece, the block to match is searched in weighted reference picture, obtains prediction residual value simultaneously
Take the sum of its square；By converting different luminance weighted parameters, the sum of corresponding residual values square are obtained, selection keeps residual error flat
Luminance weighted parameter of the square and the smallest luminance weighted parameter as reference picture, corresponding forward direction reference picture and backward reference
The overall brightness weighting parameters of image are W1、W2.The above two method for obtaining overall brightness weighting parameters is the prior art, this
Inventive embodiments do not repeat them here.
It will be appreciated by persons skilled in the art that in S103, it is determined that the corresponding first weighting ginseng of forward coding block
Number, for determining 3/4, then corresponding second weighting parameters of backward encoding block are 1-3/4=1/4.
In practical application, the reference picture where forward coding block and backward encoding block is usually to have light intensity variation
, so the coding to block to be encoded is not only related in relation to the brightness also with reference picture with weighting parameters, actual weighting ginseng
Number is (3/4*W1, 1/4*W2).Assuming that W1=1.1, W2=1.2, actual weighting parameters are (0.825,0.3).By practical weighting
Parameter (0.825,0.3) combines forward coding block and backward encoding block, the residual values of prediction block and block to be encoded is obtained, to residual error
Value is encoded.When image does not have the variation of light intensity, the weighting parameters of overall brightness are 1.
In practical application, the acquisition pattern of weighting parameters can be using one parameter N of setting, it is assumed that N=4, then it is specific to add
Weight parameter are as follows: (0,1), (1/4,3/4), (1/2,1/2), (3/4,1/4), (1,0).Can also by where block to be encoded wait compile
Code frame with where forward coding block and backward encoding block forward reference frame and backward reference frame bound, when next time encode
When, if frame to be encoded still corresponds to the forward reference frame and backward reference frame, N is called directly, obtains weighting parameters.
In general, the acquisition pattern of N can use: being configured in advance；Alternatively, by each piece and forward direction in frame to be encoded
Reference frame and backward reference frame carry out successive ignition, and the value range of usual N is 3 or more, in view of the influence to code efficiency, N
Value do not exceed 10 generally.N can be written to the frame head of frame to be encoded or write in coding parameter combination.
When parameter is (0,1) and (1,0), specific corresponding back forecast and forward prediction, the embodiment of the present invention are not done superfluous
It states.
As it can be seen that application present invention embodiment shown in FIG. 1, to volume after being determined by the forward direction weighting parameters of forward coding block
The corresponding back-weight parameter of code block, and do not have to choose back-weight parameter from weighting parameters, it avoids the prior art and is adding
The lower problem of the unreasonable accuracy that will lead to predictive coding of back-weight parameter is chosen in weight parameter.This improves
The accuracy of inter prediction encoding.
Fig. 2 is a kind of structural schematic diagram of inter prediction encoding device provided in an embodiment of the present invention, may include: to divide
Module 201, the first determining module 202, the second determining module 203, third determining module 204, the 4th determining module the 205, the 5th
Determining module 206, coding module 207.
Division module 201, for frame to be encoded to be divided into multiple blocks to be encoded using encoder.
First determining module 202, for be directed to each block to be encoded, determine the corresponding forward coding block of the block to be encoded and
Backward encoding block.
Specifically, the first determining module 202 can be used in practical application: each block to be encoded is directed to, using movement
Search technique determines the corresponding forward coding block of the block to be encoded and backward encoding block.
Second determining module 203, for determining corresponding first weighting parameters of the forward coding block.
Specifically, the second determining module 203 may include: the first computational submodule, the second calculating submodule in practical application
Block determines submodule (not shown), wherein
First computational submodule, for calculating pre-set according to the forward coding block and the backward encoding block
The corresponding prediction block of each forward direction weighting parameters；
Second computational submodule, for calculating the residual values of the block to be encoded and each prediction block；
Submodule is determined, for being determined as the first weighting for the corresponding forward direction weighting parameters of the smallest residual values of absolute value
Parameter.
Third determining module 204 includes the reference picture of the forward coding block based on overall brightness for determination
Second weighting parameters, and determine that the third based on overall brightness of the reference picture comprising the backward encoding block weights ginseng
Number.
Specifically, the weighting parameters based on overall brightness of reference picture are determined in practical application, it can be according to the ginseng
The brightness value and pixel sum for examining all pixels point of image, determine the weighting based on overall brightness of the reference picture
Parameter.
Specifically, determine the weighting parameters based on overall brightness of reference picture in practical application, can according to it is described to
Coded frame, the reference picture and least residual technology determine the weighting parameters based on overall brightness of the reference picture.
4th determining module 205, for determining the backward encoding block the corresponding 4th according to first weighting parameters
Weighting parameters.
Specifically, the 4th determining module 205 can be used in practical application: according to first weighting parameters and public affairs
Formula: the first weighting parameters of four weighting parameters=1- determine corresponding 4th weighting parameters of the backward encoding block.
5th determining module 206, for being added according to first weighting parameters, second weighting parameters, the third
Weight parameter, the 4th weighting parameters, determine the practical weighting parameters of the prediction of the block to be encoded.
Coding module 207, for carrying out predictive coding to the block to be encoded using the practical weighting parameters of prediction.
As it can be seen that application present invention embodiment shown in Fig. 2, to volume after being determined by the forward direction weighting parameters of forward coding block
The corresponding back-weight parameter of code block, and do not have to choose back-weight parameter from weighting parameters, it avoids the prior art and is adding
The lower problem of the unreasonable accuracy that will lead to predictive coding of back-weight parameter is chosen in weight parameter.This improves
The accuracy of inter prediction encoding.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
Each embodiment in this specification is all made of relevant mode and describes, same and similar portion between each embodiment
Dividing may refer to each other, and each embodiment focuses on the differences from other embodiments.Especially for device reality
For applying example, since it is substantially similar to the method embodiment, so being described relatively simple, related place is referring to embodiment of the method
Part explanation.
Those of ordinary skill in the art will appreciate that all or part of the steps in realization above method embodiment is can
It is completed with instructing relevant hardware by program, the program can store in computer-readable storage medium,
The storage medium designated herein obtained, such as: ROM/RAM, magnetic disk, CD.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the scope of the present invention.It is all
Any modification, equivalent replacement, improvement and so within the spirit and principles in the present invention, are all contained in protection scope of the present invention
It is interior.
Claims (8)
1. a kind of interframe prediction encoding method, which is characterized in that the described method includes:
Frame to be encoded is divided into multiple blocks to be encoded using encoder；
For each block to be encoded, the corresponding forward coding block of the block to be encoded and backward encoding block are determined；
According to the forward coding block and the backward encoding block, it is corresponding pre- to calculate pre-set each forward direction weighting parameters
Survey block；
Calculate the residual values of the block to be encoded and each prediction block；
By the corresponding forward direction weighting parameters of the smallest residual values of absolute value, it is determined as the first weighting parameters；
Determine that the second weighting parameters based on overall brightness of the reference picture comprising the forward coding block, and determination include
The third weighting parameters based on overall brightness of the reference picture of the backward encoding block；
According to first weighting parameters and formula: the first weighting parameters of four weighting parameters=1- determine the backward volume
Corresponding 4th weighting parameters of code block；
According to first weighting parameters, second weighting parameters, the third weighting parameters, the 4th weighting parameters,
Determine the practical weighting parameters of the prediction of the block to be encoded；
Using the practical weighting parameters of prediction, predictive coding is carried out to the block to be encoded.
2. determining the block to be encoded the method according to claim 1, wherein described be directed to each block to be encoded
Corresponding forward coding block and backward encoding block, comprising:
For each block to be encoded, using motion search technology, the corresponding forward coding block of the block to be encoded and backward volume are determined
Code block.
3. the method according to claim 1, wherein determining the weighting ginseng based on overall brightness of reference picture
Number, comprising:
According to the brightness value of all pixels of reference picture point and pixel sum, determine the reference picture based on
The weighting parameters of overall brightness.
4. the method according to claim 1, wherein determining the weighting ginseng based on overall brightness of reference picture
Number, comprising:
According to frame, the reference picture and the least residual technology to be encoded, determine the reference picture based on entirety
The weighting parameters of brightness.
5. a kind of inter prediction encoding device, which is characterized in that described device includes:
Division module, for frame to be encoded to be divided into multiple blocks to be encoded using encoder；
First determining module determines the corresponding forward coding block of the block to be encoded and backward volume for being directed to each block to be encoded
Code block；
Second determining module, comprising: the first computational submodule, determines submodule at the second computational submodule；Described first calculates son
Module, for calculating pre-set each forward direction weighting parameters pair according to the forward coding block and the backward encoding block
The prediction block answered；Second computational submodule, for calculating the residual values of the block to be encoded and each prediction block；It is described true
Stator modules, for being determined as the first weighting parameters for the corresponding forward direction weighting parameters of the smallest residual values of absolute value；
Third determining module, for determining the second weighting based on overall brightness of the reference picture comprising the forward coding block
Parameter, and determine the third weighting parameters based on overall brightness of the reference picture comprising the backward encoding block；
4th determining module, for according to first weighting parameters and formula: the weighting ginseng of four weighting parameters=1- first
Number, determines corresponding 4th weighting parameters of the backward encoding block；
5th determining module, for according to first weighting parameters, second weighting parameters, the third weighting parameters,
4th weighting parameters determine the practical weighting parameters of the prediction of the block to be encoded；
Coding module, for carrying out predictive coding to the block to be encoded using the practical weighting parameters of prediction.
6. device according to claim 5, which is characterized in that first determining module is specifically used for:
For each block to be encoded, using motion search technology, the corresponding forward coding block of the block to be encoded and backward volume are determined
Code block.
7. device according to claim 5, which is characterized in that determine the weighting ginseng based on overall brightness of reference picture
Number, comprising:
According to the brightness value of all pixels of reference picture point and pixel sum, determine the reference picture based on
The weighting parameters of overall brightness.
8. device according to claim 5, which is characterized in that determine the weighting ginseng based on overall brightness of reference picture
Number, comprising:
According to frame, the reference picture and the least residual technology to be encoded, determine the reference picture based on entirety
The weighting parameters of brightness.
Priority Applications (12)
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| CN201610765403.4A CN106358041B (en) | 2016-08-30 | 2016-08-30 | A kind of interframe prediction encoding method and device |
| JP2019510423A JP6781823B2 (en) | 2016-08-30 | 2017-08-09 | Interframe predictive coding method and equipment |
| PCT/CN2017/096641 WO2018040869A1 (en) | 2016-08-30 | 2017-08-09 | Interframe predictive coding method and device |
| SG11201811472QA SG11201811472QA (en) | 2016-08-30 | 2017-08-09 | Interframe predictive coding method and device |
| ES17845171T ES2857857T3 (en) | 2016-08-30 | 2017-08-09 | Inter-frame bi-predictive encoding method and device |
| EP17845171.2A EP3509303B1 (en) | 2016-08-30 | 2017-08-09 | Interframe bi-predictive coding method and device |
| MYPI2018002705A MY196896A (en) | 2016-08-30 | 2017-08-09 | Interframe predictive coding method and device |
| KR1020187037514A KR102148723B1 (en) | 2016-08-30 | 2017-08-09 | Inter-frame predictive coding method and apparatus |
| CA3028510A CA3028510C (en) | 2016-08-30 | 2017-08-09 | Bidirectional interframe predictive coding method and device using forward and backward block weighting and block brightness weighting |
| AU2017317848A AU2017317848B2 (en) | 2016-08-30 | 2017-08-09 | Interframe predictive coding method and device |
| US16/313,601 US10715820B2 (en) | 2016-08-30 | 2017-08-09 | Interframe predictive coding method and device |
| TW106128993A TWI655860B (en) | 2016-08-30 | 2017-08-25 | Inter prediction coding method and device |
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| CN106358041B (en) * | 2016-08-30 | 2019-05-10 | 北京奇艺世纪科技有限公司 | A kind of interframe prediction encoding method and device |
| US20220174277A1 (en) * | 2019-03-11 | 2022-06-02 | Telefonaktiebolaget Lm Ericsson (Publ) | Video coding involving gop-based temporal filtering |
| CN115695812A (en) * | 2021-07-30 | 2023-02-03 | 中兴通讯股份有限公司 | Video encoding method, video decoding method, video encoding device, video decoding device, electronic equipment and storage medium |
| CN116168790B (en) * | 2023-04-25 | 2023-07-14 | 深圳爱递医药科技有限公司 | Big data recruitment system for clinical trial |
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| SG11201811472QA (en) | 2019-03-28 |
| CN106358041A (en) | 2017-01-25 |
| TW201820870A (en) | 2018-06-01 |
| AU2017317848A1 (en) | 2019-01-24 |
| AU2017317848B2 (en) | 2020-04-30 |
| MY196896A (en) | 2023-05-09 |
| US10715820B2 (en) | 2020-07-14 |
| WO2018040869A1 (en) | 2018-03-08 |
| CA3028510C (en) | 2022-05-31 |
| EP3509303A1 (en) | 2019-07-10 |
| ES2857857T3 (en) | 2021-09-29 |
| CA3028510A1 (en) | 2018-03-08 |
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| US20190246119A1 (en) | 2019-08-08 |
| EP3509303A4 (en) | 2019-07-10 |
| KR102148723B1 (en) | 2020-08-28 |
| EP3509303B1 (en) | 2020-12-02 |
| KR20190013908A (en) | 2019-02-11 |
| JP2019528634A (en) | 2019-10-10 |
| JP6781823B2 (en) | 2020-11-04 |
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